Abstract
In Japan, collisions with wind turbines are a major cause of death of White-tailed Eagles Haliaeetus albicilla . In order to develop measures to avoid or reduce collisions of sea eagles with wind turbines, the tracking of White-tailed and Steller’s Sea Eagles H. pelagicus was conducted using a theodolite and a laser range finder in Tomamae, northern Japan from December 2011 to January 2012. The tracking result showed that White-tailed and Steller’s Sea Eagles flew along the coast to detour around wind turbines. Although eagles normally detour around wind turbines, however, they sometimes collide with wind turbines, which suggests that they collide with wind turbines when some conditions make it difficult for them to avoid turbines. Therefore, these conditions need to be determined to avoid or reduce wind turbine collisions of the species.
